hangout vs stamping ground

hangout and stamping ground both are nouns.

Word	Noun	Adjective	Verb	Adverb
hangout	Yes	No	No	No
stamping ground	Yes	No	No	No

As nouns, hangout and stamping ground are synonyms defined as:

Other synonyms of hangout include haunt, repair, resort.

hangout (noun)	stamping ground (noun)
a frequently visited place	a frequently visited place